Environmental Ecology Mock Tests

13 questions available

Environmental Ecology Mock Test 1

Questions: 13

Sample Questions

UPSC General Studies

The 'Carbon Cycle' in nature refers to:

A The process by which carbon is continuously exchanged between the atmosphere, biosphere, oceans, and geosphere

B The formation of carbon-based minerals in the Earth's crust

C The conversion of carbon dioxide into oxygen by plants during photosynthesis only

D The burning of fossil fuels to release carbon into the atmosphere

UPSC General Studies

With reference to ecological pyramids, consider the following statements: 1. The pyramid of energy is always upright in any ecosystem. 2. The pyramid of biomass in a marine ecosystem is always inverted. 3. The pyramid of numbers is always upright in a grassland ecosystem. Which of the statements given above is/are correct?

A 1 only

B 1 and 2 only

C 2 and 3 only

D 1, 2 and 3

UPSC General Studies

The 'Greenhouse Effect' is caused primarily by which of the following mechanisms?

A Ozone layer depletion in the stratosphere

B Trapping of infrared radiation by greenhouse gases in the atmosphere, leading to warming of the Earth

C Direct heating of the Earth's surface by increased solar radiation

D Reflection of sunlight by increased cloud cover

UPSC General Studies

With reference to the "El Niño" phenomenon, which of the following effects does it typically have on the Indian monsoon?

A It strengthens the monsoon rainfall across India

B It causes excessive rainfall and flooding in India

C It tends to cause deficient rainfall and drought conditions in India

D It has no significant effect on the Indian monsoon

UPSC General Studies

With reference to ecological succession, consider the following statements: 1. Xerarch succession begins in areas where water is scarce, such as bare rock or desert environments. 2. Hydric succession begins in very wet areas, such as marine or freshwater environments, and progresses towards mesic (moderately moist) conditions. 3. Succession in bare rock is an example of hygroxer succession. Which of the statements given above is/are correct?

A 1 and 2 only

B 1 and 3 only

C 2 and 3 only

D 1, 2 and 3

UPSC General Studies

In an ecosystem, which of the following correctly represents a valid food chain?

A Grass → Deer → Tiger → Fungi

B Grass → Insect → Frog → Snake → Eagle

C Eagle → Snake → Frog → Insect → Grass

D Grass → Tiger → Deer → Insect

UPSC General Studies

In the context of ecological pyramids, which of the following is typically inverted in certain ecosystems?

A Pyramid of energy

B Pyramid of biomass in an aquatic ecosystem

C Pyramid of number in a grassland ecosystem

D All of the above

UPSC General Studies

The concept of 'Carrying Capacity' in ecology refers to:

A The maximum number of predators in an ecosystem

B The maximum population size of a species that an environment can sustain indefinitely

C The total area of land available for agriculture

D The rate of population growth in a given area

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